Ribbon-carrier for type-writing machines.



J. HARPER.

RIBBON CARRIER FOR TYPE WRITING MACHINES.

APPLICATION FILED AUG. 4,19111 "1,009,305, Patented Nov. 21, 1911.

Reveal Zn 7% WW/ We WM UNITED STATES PATENT OFFICE.

JUAN HARPER, OF SANTIAGO, CHILE.

RIBBON-CARRIER FOR TYPE-WRITING- MACHINES.

To oZZ- 'whom it may concern: 4 I 1 Be it known that I, JUAN HARPER, acit-izen of the Republic of Chile, and resident of Santiago, Chile, haveinvented a new and useful Ribbon-Carrier for Type-Writing 4 Machines, ofwhich the following is a specification.

My invention relates to a ribbon carrier for typewriting machines, with.the objectin view of providing a carrier which will permit the ribbon tobe shifted edgewise-to bring longitudinal sections of the ribbon intoposition to receive the immediate im-.

pact of the type. p p

My invention is particularly well adapted to use in connection with whatis known in the art as .the Oliver typewriter, although I do not wish tolimit myself to its use with this particular machine.

In the accompanying drawings, Figure 1 is a top plan view of the ribboncarrier as it appears in use. Fig. 2'is a view of the same in sideelevation. Fig. 3 is a longitudinalsection in the plane of the line A-Aof Fig; 1. Fig. 4is a bottom plan view. Fig. 5 is a transverse sectionin the plane of the line- BB of Fig. 2. Fig. 6 is a top plan view of amodified form. Fi 7 is a longitudinal section in the plane 0 the lineC-C of Fig. 6, and Fig. 8 1s a bottom plan view of the same.

The support for the ribbon carrier proper is here shown as the Oliverribbon carrier support and consists of parallel links 1 and 2fulcrumedina support 3 and connected at their upper ends by a plate 4. This formsno part of my present invention except so far as it serves as a suitablesupport for the ribbon carrier proper.

The ribbon carrier proper consists of a plate 5 from one end of whichproject branches 6 and 7, the outer-ends of which areturned over and'under, as-shown at 8 and 9 to form elongated openings 10 through whichthe ribbon 11 passes. At or near its opposite end, the plate 5 isclamped to the support 4 by means of a T-bolt- 12, the head 13 of WhIChCIOSSQS an elongated slot 14 in the support 4, and the threaded end ofwhich receives a milled thumlTnut 15, as clearly shown in the severalfigures. The plate 5 is further guided on the support 4 by means of aT-screw 16, the head- 1 of WhlCh overlaps the walls of an elongated slot18, see Fig. 4, and the shank of which is squared, as shown at 19, toprevent the On the plate 5, there' areindicator marks,

denoted by 20, 21, and an index pointer 22,

uprising from the support 4,"and reaching over the edgeof'the plate 5,serves to lock the ribbon carrier in the position desired to shift theribbon laterally from one position to. another,ithe twoositions being.shown in Fig. 1, the one in ll lines and theother in-dotted lines. I

The modified form'shown in Figs. 6 to 8 inclusive, shows the body of thecarrier consisting of a plate 23 provided with branches as hereinbeforeexplained and having secured to its upper face a spring tongue 24, theheel end of which is held securely to the plate 23 by means of a T-rivet25, the head of which overlaps the walls of an elongated slot 26 in thesupport and the shank of which is squared to slide along the slot 26,the free end of the said spring 24 being provided with a pin 27 settherein, which pin projects downwardly through the plate 23 and isadapted to enter one or another of the three holes 28, 29, 30, formed inthesupport. These three holes 28, 29, 30 correspond to the threepositions indicated by 'the'marks 31, 32, 33, on the upper face of theplate 23 and serve to adjust the ribbon 11 in position to have the typestrike it along a central line and along lines on either side of acentral line. In this form theindex pointer 34 and an overlapping lip orguide 35, see Fig. 6, are formed at the opposite ends of a narrow stripof material 36 which is secured to the under side of the support bymeans of screwsc37, 38. It is obvious that the structure shown in Figs.1 to 5 inclusive will admit of shifting the, ribbon 11 laterally notonly into the two positions indicated by the marks 20 and 21 on the faceof the plate, but also into as I many positions as may be desired sincethe slots 14 and 18 are continuous instead of being articulated as inthe modified form.

The ribbon carrier 'may' be detached at pleasure when desired, in thefirst instance by removing the milled nut 15 and withdrawing thescrew-bolt 12, when the support may be swung at an angle of 90 to permitthe head 17 of the guide screw to pass up wardly through the slot 18.Iii the modified form the piece 36 may be removed by unscrewing thescrews 37, 38 and then by withdrawing the pin 27, the carrier may beswung to permit the head of the guide screw or rivet to pass through theslot 26.

What I claim is:

1. A ribbon carrier for typewriting machines comprising a carrier properprovided with loops for receiving the ribbon, a support for the carrierprovided with an elongated slot, a T-shaped guide projecting from andfixed to the carrier proper for directing the carrier proper along itssupport and holding it on its support and a 'devicefor locking thecarrier proper in different adjusted positions.

2. A ribbon carrier for typewriting machines comprising a carrier properprovided with arms for receiving the ribbon and with a scale to indicatedili'ere'nt' adjustments in JUAN HARPER.

Witnesses JOHN R. BEAVER, GEORGE PROUD.

